Department of Urology, School of Medicine, Faculty of Health Sciences, University of Pretoria, South Africa.
Ecotoxicol Environ Saf. 2010 Oct;73(7):1537-42. doi: 10.1016/j.ecoenv.2010.07.026. Epub 2010 Aug 11.
This study reports on intersex in Oreochromis mossambicus, an indigenous fish species inhabiting most aquatic systems throughout South Africa (SA). Male fish were collected from three sites in the Luvuvhu River, Limpopo Province, SA: Albasini Dam (AD), Nandoni Dam (ND), and Xikundu Weir (XW). The latter two sites are situated in a currently dichloro-diphenyl-trichloroethane (DDT) sprayed area. A laboratory-bred reference group (Aq R) were included for a histological comparison. 48% of the fish at AD were intersex individuals compared with 63% at ND, and 58% at XW. The Aq R fish had no cases of intersex. o,p'- and p,p'-DDT and metabolites dichlorodiphenyldichloroethane (DDD) and -dichlorodiphenyldichloroethylene (DDE) were detected in fat samples, indicative of contamination of the aquatic environment and subsequent exposure of fish to these chemicals. Although some of the fat samples contained levels of DDTs no association could be established between intersex and chemical contaminants in fish.
本研究报告了奥利亚罗非鱼（Oreochromis mossambicus）中的雌雄间性现象，奥利亚罗非鱼是一种栖息在南非（SA）大多数水生系统中的本地鱼类。从南非林波波省的卢武卢胡河的三个地点采集了雄性鱼类：Albasini 大坝（AD）、Nandoni 大坝（ND）和 Xikundu 堰（XW）。后两个地点位于目前喷洒滴滴涕（DDT）的区域。还包括一个实验室养殖的参考组（Aq R）进行组织学比较。AD 处的 48%的鱼类是雌雄间性个体，而 ND 处为 63%，XW 处为 58%。Aq R 鱼类没有雌雄间性的情况。脂肪样本中检测到 o,p'-和 p,p'-DDT 以及代谢物二氯二苯二氯乙烷（DDD）和二氯二苯二氯乙烯（DDE），表明水生环境受到污染，随后鱼类接触到这些化学物质。尽管一些脂肪样本中含有滴滴涕水平，但无法确定鱼类中的雌雄间性与化学污染物之间存在关联。
